Luminescence – structure relationships in MYP2O7:Eu3+ (M=K, Rb, Cs)

Synthesis, Structure, Morphology, and Luminescent Properties of Ba2MgWO6: Eu3+ Double Perovskite Obtained by a Novel Co-Precipitation Method

“…As noted in the preliminary work, the O 2− -Eu 3+ CTB was found at around 304 nm in CaMoO4: Eu 3+ , 293 nm in AMoO4: Eu 3+ (A = Ba, Sr), and at 250 nm in BaNa2W2O11: Eu 3+ . The less intense and narrower bands appeared near the visible region (from 370 to 400 nm) and at 462.5 nm that could be ascribed to f-f transitions of the 7 F0 → 5 D4, 5 G7, 5 L7, 5 L6, 5 D3 and 7 F0 → 5 D2 transitions, respectively, [11][12][13] (see inset in Figure 6).…”

Strontium Phosphate Composite Designed to Red-Emission at Different Temperatures

“…The 5 D 0 → 7 F 0 transition is located at 576.9 nm (17,334 cm −1 ), the 5 D 0 → 7 F 1 transition at 585.9 nm (17,068 cm −1 ), the 5 D 0 → 7 F 2 transition at 616.5 nm (16,221 cm −1 ), the 5 D 0 → 7 F 3 transition at 655.2 nm (15,262 cm −1 ), the 5 D 0 → 7 F 4 transition at 700.5 nm (14,275 cm −1 ), the 5 D 0 → 7 F 5 transition at 742.7 nm (13,464 cm −1 ) and the 5 D 0 → 7 F 6 transition at 805.3 nm (12,418 cm −1 ). The 5 D 0 → 7 F 0 transition is split into three components located at 571.6 nm (17,495 cm −1 ), 576.9 nm (17,334 cm −1 ) and 579.9 nm (17,244 cm −1 ), indicating that Eu 3+ ions are located at least into three different crystallographic sites in this composite [ 39 , 40 , 41 , 42 ]. A difference between the intensity ratio of components is visible.…”